VIDEO: Mark Lynas speech on GM crops

Environmentalist and author Mark Lynas has provoked a fierce debate about GM crops following a pro-GM speech to the Oxford Farming Conference.

The conference speech by Mr Lynas has gone viral since he delivered it on 3 January. His paper was downloaded from the OFC website 75,000 times in 48 hours and there have been 15,300 views of the video since Friday.